Tire valve



Patented Mar. 6, 1923.

ALEXANDER v. oHYitoWsKI,y or D'Ernorr, yizrronrenn. n

TIRE VALVE.'

Application filed March 25,1922'. Serial No.' 546,775.

To all whom it may concern: v Be it known that I, ALEXANDER V. CHY` Lowsnr, citizen of the'v United States,v residing at Detroit, county of layne, State 0f Michigan, have invented a certain new and useful mprovement in Tire Valves, and declare the following to bea full, clear, and exact description of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a partof thisspecication.

` My invention relates to pneumatic tire valves shown-in the accompanying drawings and more particularly described in the following specification andy claims. f

The primary object of this invention is to provide a valvesimple in its construction and operation whichvwhen closed is per-` fectly air tight but may be secured in an open position for deflating the tire whenrequired.

The invention further provides for auto`- l matically closing the valve following each operation of the pulnprwhen filling the tire with air that the air may not escape and also for opening the valve sufliciently when "re-, quired to secure a' pressure gauge reading.'

` A further'object ofthe invention is to provide a construction in which the rclosure elements maybe readily installed invalve.

housings now in use in place of the valve parts ordinarily installed therein whereby the advantages gained b-y the Ause ofthe closure elements herein4A described may be obtained at a minimumjcost.'

Vith the foregoing -n`d`y other objects in view which will appear as the description proceeds, the invention further resides in the combination and arrangement of parts and in the details of construction herein; after described and claimed, it being understood that changes may be made in the precise embodiment of the invention herein disclosed without departing from the spirit of the same. Y

In the drawings accompanying this specification:

Figure l is a cross-sectional view of the valve in closed position, drawn on a relatively large scale to clearly disclose the construction of its several parts,-the usual closure cap screwed tothe Valve housing having been removed.

Figure 2 is a similar cross sectional View showing the valve forced from its seat that the pneumatic tube may be deflated.

` Figure 3 is a fragmentary elevation showi P ATETFFICE l A denotes the valve housing provided at one end withthe usual disc rA overlapping a portion of the inflatable inner tube 'B C indicates a washer adjacent the "outer wall of the tube. D denotes the usualwing washer and E is'r avnut threaded on lthevalve housing to secure the parts to thetube. F is a central port Athrough the valve housing A. G denotes the valve 'stem extending through the centralport F 'and screwed yto its lower -end is a Valve'closure H', and'fH is a rubber ory liber disc mounted thereon: G" indicatesl a flange integral with the valve stem. l is a spring housed inthe counterbore A2r at the upper end of they valve housing, `bearing at one end against thev shoulder formed by the counterbore and 4at its other vend against the flange G onthe valve ste1n;-the action of the spring serving to automatically seat the valve.y J is a buShi ing loosely sleeved `upo-n the stem above the iiange G.` lK screwedin the upper end'of the valve housing having an inwardly directed liange K` projecting .intok a relatively wide peripheral groove J, near the upper end of thebush-` ingJ A J2 is ay flange at the end of the bush-l ing overlappingthefinwardly dire'cted'lange K of the nut to couple the nut and bushing together while permitting the parts'to-rotate independently of each other. G2 is a flange integral with the stem overlapping the flange at the upper end of the bushing J. K2 are upstanding lugs integral With the nut K adapted to receive a suitable socket wrench l for rotating the nut. l

Having now indicated the several parts by reference letters the construction and operation of the device will be readily understood.

It-will iirstbe assumed that the tube is filled with air and that the tire is to be deflated. To eifectthis result the nut K` is vscrewed downwardly by a suitable wrench adapted to engage its lugs K2 sothat the inwardly projecting flanges K of the nut bear upon the shoulder of the bushing J the lower end ofthe bushing being in con-v is v`an annular nuttact with the flange G of the valve stem forces the valve Ii from its seat, as shown in Figure 2, thereby permitting the air to escape from the tube through the central port F.

Having deflated the tire the Anut K is screwed outwardly, thereby permitting the valve H to seat under the urge of the spring` I. The tire may now be inflated inthe usual manner by making proper connection with a suitable compression pump-the valve I'I being raised as. each stroke ot' the pump plunger delivers the air into the tubey and is automatically closed under the action ot the spring until again forced from its seat by the incoming ain VWhen thevtube has been properly inflated the valve I-I may be drawn to its sea-t by a further outward adjustment of the annular nu-t K,-the inwardly directed flange K of the latter contacting with the flange J2 of the bushing J, iforces the busl'iing into contact with the flanger G? of the valve stem, thereby securing the valve H upon its seat, where it is securely held until again released in the manner previously described. In order to determine the pressure of air in the tube the annular nut K is screwed downwardly sufliciently to permit the valve II being` raised from its seat by pressing on the outwardly projecting end (is of the valve stem G. After securing' the gauge reading the valve is returned to its seat as before by the upward adjustment of the nut.

Having thus described my invention what I claim is:

. l, In a valve of the character described, the combination of a valve housingy having a central bore with a counterbore at its outer end tapped to receive a nut, a valve stem fitted at its inne-r end with a valve disk adapted to be seated upon the innerend of the valve housing, a bushing slidablyA androtatably mounted on said stein, inner.v and outer annular flanges .on saidfstem. adapted t0 limit; the sliding movement of said bush-- ing with respect to said stem, said bushing llfilizeei having a peripheral groove, an annular nut screwed into the counterbored end of the valve housing having a flange extending into the peripheral groove in said bushing to slidabl'y and rotatably couple said nut and bushing, a spring normally tending to seat said valve, said nut being adapted to be moved outwardly to carry said bushing into enga-gement with said outer flange to thereby tighten'said valve independently ofthe action of said spring, and said nut vbeing also adapted to be moved inwardly to carry said bushing into engagement with the inner flange to thereby open the valve against the action of said spring. y

2. In a valve of the character described, the combination of a valve housing having a central bore with a counterbore at its outer end; tapped to. receive a nut, a valve stem fitted at its inner end with a valve disk adapted to be seated upon the inner end of ther valve housing, a bushing slidably andv rotatably mounted on said stem, inner and outer annular flanges on said stem adapted to limit the sliding movement of said bushing with respect to said stem,'said bushing having a peripheral groove, an annular nut screwed into the counterbored end of the valve housing having a flange extending into the peripheral Vgroove in said bushing to slidably and rotatably couple said nut and bushing, a spring normally tending to seat said valve, the loose connection betweenl the annular Anut and the grooved bushing permitting said bushing to be held in forcible contact with either of. said flangesor held in neutral' position, lwhereby said valve may be tightened or opened by meansof said nut and bushing or may` be opened. indep endently of said nut and bushimn y In testimony whereof, I signthis specification inthe presence `of two witnesses.v

ALEXANDER v. 'envnows-Ki.

illitnesses i S. E. THOMAS', JOHN CoNsIDINE. 

